IT 2101 Lecture Notes - Lecture 4: Ultra-High-Definition Television, Grayscale, Inkjet Printing
3 Sep 2016
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Document Summary
Input is any data or instructions that are used by a computer. They can come directly from you or from other sources. You provide input whenever you use system or application programs. Other sources input whenever you use system or application programs. Input devices are hardware used to translate words, numbers, sounds, images, and gestures that people understand into a form that the system unit can process. In addition to keyboards and mice, there are a wide variety of other input devices. These include pointing, scanning, image capturing, and audio-input devices. One of the most common ways to input data is by a keyboard. Keyboards convert numbers, letters, and special characters that people understand into electrical signals. These signals are sent to, processed by, the system unit. Traditional keyboards- these full-size keyboards are widely used on desktops and larger computers. The standard u. s. traditional keyboard has 101 keys. Some traditional keyboards include a few additional special keys.
